Physical performance, 47kg/mm Extensibilit.,7% Yield point,g/mm2 escription of Magnalium leveling ruler Magnalium measuring too, Magnalium leveling ruler ... and industrial construction projects .(3)Merit of magnalium measuring tool Not deformation: Yield point of general steel material is 30kg/mm2, ... general cast iron is 38kg/mm2. The yield point of this material can be reach to 110kg/mm2, the ...